30 WATTLES OR ACACIAS. 
South Australia, Tasmania and New South Wales. The wood is 
most valuable for furniture, carriages, casks, planks and other 
technic purposes ; it is of unusual hardness. The vascular pores 
are isolated in pairs, or often in little groups; the anatomic 
structure at the whole is not dissimilar to that of Acacia decur- 
rens, but the woody fibres are pressed more closely together. 
A single illustration of the numerous shrubby species of Acacia 
must on this occasion suffice, to initiate into their study; the 
representative species chosen for the purpose being Acacia pra- 
vissima, a rare one, confined to the eastern regions of this colony 
Chios XU). 
To complete a first insight into the large order of Leguminosae, 
to which the Acacias belong, it is deemed advisable to cite repre- 
sentatives of the two other tribes of this Order, the Acacie being 
referable to the tribe of Mimosee, distinguished by small sym- 
metric flowers, with petals usually towards the base united into a 
tube, and as well as the lobes of the calyx contiguous (not over- 
lapping) at the margin while in bud. In the tribe of Cesalpinee 
the petals are free, unequal or hardly equal, and with their 
margins overlapping before expansion, the upper petal being the 
innermost. In the trzbe of Papilionacee the petals are very 
unequal, the upper one being the broadest and outermost, the 
two lower petals connate, all overlapping at their margin while 
in bud. 
Cassia artemisioides (Fig. XIII.)—Shrubby, pale velvet- 
downy or somewhat silky or almost glabrous. Leaves consisting 
of one to six pairs of leaflets or of a dilated leafstalk (petiole) 
without leaflets. Stipules very narrow, acute, deciduous. Axis 
(rachis) of the leaves (when leaflets are developed) simple, chan- 
nelled- or compressed-filiform or flat ; leaflets of equal color on 
both sides, }-2 inches long, in one pair or pinnately arranged in 
several pairs, semicylindric or flat and then from linear to oval, 
entire ; a depressed gland sessile between the leaflets of the lower 
or several pairs of them, seldom obliterated. Flowers fragrant, 
several or few in a corymb or rarely only two or one on the stalk, 
each provided with a slender stalklet. Bracts small, oval, early 
dropping. Sepals (free segments of the calyx) unequal in size, 
